package com.example.lotterysystem.service.impl;

import com.example.lotterysystem.common.errorcode.ServiceErrorCodeConstants;
import com.example.lotterysystem.common.exception.ServiceException;
import com.example.lotterysystem.common.utils.*;
import com.example.lotterysystem.service.VerificationCodeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
public class VerificationCodeServiceImpl implements VerificationCodeService {

    /**
     * 对于Redis里面的key需要标准化：为了区分业务，应该给key定义前缀：VerificationCode_13131313131
     */

    private static final String  VERIFICATION_CODE_PREFIX = "Verification_Code_";
    private static final Long VERIFICATION_TIMEOUT = 60L;
    private static final String  VERIFICATION_TEMPLATE_CODE = "SMS_479850231";

    @Autowired
    private SMSUtil smsUtil;

    @Autowired
    private RedisUtil redisUtil;

    @Override
    public void sendVerificationCode(String phoneNumber) {
        //1、校验手机号
        if (!RegexUtil.checkMobile(phoneNumber)) {
            throw new ServiceException(ServiceErrorCodeConstants.PHONE_NUMBER_ERROR);
        }

        //2、生成随机验证码
        String code = CaptchaUtil.getCaptcha(4);

        //3、发送验证码
        Map<String ,String > hashmap = new HashMap<>();
        hashmap.put("code",code);
        smsUtil.sendMessage(VERIFICATION_TEMPLATE_CODE,
                            phoneNumber,
                            JacksonUtil.writeValueAsString(hashmap));

        //4、缓存验证码
        redisUtil.set(VERIFICATION_CODE_PREFIX + phoneNumber, code,VERIFICATION_TIMEOUT);
    }

    @Override
    public String getVerificationCode(String phoneNumber) {
        //1、校验手机号
        if (!RegexUtil.checkMobile(phoneNumber)) {
            throw new ServiceException(ServiceErrorCodeConstants.PHONE_NUMBER_ERROR);
        }

        return redisUtil.get(VERIFICATION_CODE_PREFIX+phoneNumber);
    }

}
